26131897 has 16 divisors (see below), whose sum is σ = 30340800. Its totient is φ = 22256640.

The previous prime is 26131849. The next prime is 26131927. The reversal of 26131897 is 79813162.

It is a cyclic number.

It is not a de Polignac number, because 26131897 - 2¹¹ = 26129849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26131817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19629 + ... + 20917.

It is an arithmetic number, because the mean of its divisors is an integer number (1896300).

Almost surely, 2^26131897 is an apocalyptic number.

It is an amenable number.

26131897 is a deficient number, since it is larger than the sum of its proper divisors (4208903).

26131897 is a wasteful number, since it uses less digits than its factorization.

26131897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416.

The product of its digits is 18144, while the sum is 37.

The square root of 26131897 is about 5111.9367171357. The cubic root of 26131897 is about 296.7497163999.

It can be divided in two parts, 26131 and 897, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 26131897 in words is "twenty-six million, one hundred thirty-one thousand, eight hundred ninety-seven".